A core file is created when a program terminates unexpectedly due to a bug, or a violation of the operating system or hardware protection mechanisms. The Unix operating system kills the program and creates a core file that programmers can use to figure out what went wrong.
It contains a detailed description of the state that the program was in when it died.
Read the information inside the core file and it will contains the details of the problematic program.
Use the file command if you would like to determine what program a core file came from.
File Command To Read Core
$ file core
core: core file from 'f60webmx' - received SIGABRT
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